Clever Hans learned to copy and mirror the expectations of smarter beings. We are not being watched by smarter beings who are constantly giving us feedback, so there's no analogy there. If we were performing for an audience of super-human intelligences, we would be wise to use all the signal we could from them about what they expected us to do.
> Look at the history - it's actually hard to find something that is not biased - false, biased believes are spread throughout the timeline of human kind. Given enough time, our knowledge gets closer towards truth
"We," as in the human race. (Remember Clever Hans was a horse, being watched by us.)
However, even on an individual level, haven't you ever had a new idea that didn't come from another person but just your own observation and contemplation?
And the human race is not smarter than the human race, which is why we are not in a Clever Hans situation. There's no hidden signal, telling us when to stop, that allows us to fool other smarter creatures into thinking we're as smart as they are when we are actually just mimicking them. We're just humans, learning from nature and from other humans, and that's just culture.
> Look at the history - it's actually hard to find something that is not biased - false, biased believes are spread throughout the timeline of human kind. Given enough time, our knowledge gets closer towards truth
How do you think you know any of that?